Walmart Senior Software Engineer Interview Questions, Process, and Tips

Working code with edge cases is code that has been tested with extreme inputs to ensure it functions correctly.

• Edge cases are inputs that are unlikely to occur but can cause unexpected behavior if not handled properly.

• Examples of edge cases include empty inputs, null values, and inputs at the limits of the data type's range.

• Working code with edge cases should be thoroughly tested to ensure it functions correctly in all

An unique id for a massive parallel system can be generated using a combination of timestamp, machine id and a random number.

• Use a timestamp to ensure uniqueness

• Include a machine id to avoid collisions in a distributed system

• Add a random number to further increase uniqueness

• Consider using a UUID (Universally Unique Identifier) for simplicity

• Ensure the id generation algorithm is thread-safe

A parking lot system that manages parking spots and vehicles.

• Create a class for parking lot with attributes like total number of spots, available spots, etc.

• Create a class for vehicle with attributes like license plate number, type, etc.

• Implement methods for parking a vehicle, removing a vehicle, and checking availability of spots.

• Use data structures like arrays and maps to store and retrieve information.

• Consider imple